Fig. 1. Schematic of experimental equipment

Fig. 2. Spectra of AlO molecules under different sample temperatures. (a) Laser energy is 100 μJ; (b) laser energy is 200 μJ

Fig. 3. AlO (0-0) peak intensity versus sample temperature

Fig. 4. RSD values of AlO (0-0) peak intensity under different sample temperatures

Fig. 5. Comparison of measured and fitting spectra when laser energy is 100 μJ. (a) Sample temperature is 30 ℃; (b) sample temperature is 200 ℃

Fig. 6. AlO molecular vibration temperature versus sample temperature

Fig. 7. Time-resolved spectra of AlO molecules when laser energy is100 μJ. (a) Sample temperature is 30 ℃; (b) sample temperature is 200 ℃

Fig. 8. Peak intensity of AlO (0-0) versus delay time under different sample temperatures when laser energy is 100 μJ

Fig. 9. Vibration temperature of AlO molecule versus delay time under different sample temperatures when laser energy is 100 μJ